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Spain
Madrid
Area Metropolitana De Madrid
Las Rozas De Madrid

View of Presa del Gasco – El Gasco Dam loop from Embalse del Molino de la Hoz

Routes
Hiking trails & Routes
Spain
Madrid
Area Metropolitana De Madrid
Las Rozas De Madrid

View of Presa del Gasco – El Gasco Dam loop from Embalse del Molino de la Hoz

Moderate

2.8

(6)

22

hikers

View of Presa del Gasco – El Gasco Dam loop from Embalse del Molino de la Hoz

02:10

7.08km

240m

Hiking

Moderate hike. Good fitness required. Easily-accessible paths. Suitable for all skill levels. The starting point of the route is accessible with public transport.

Last updated: July 9, 2026

Waypoints

A

Start point

Bus stop

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1

2.53 km

View of Presa del Gasco

Highlight • Viewpoint

It is not a viewpoint, it is a clear curve in the road.

Translated by Google •

Tip by

2

2.89 km

The El Gasco dam is an unfinished dam, built at the end of the 18th century (between 1787 and 1799), on the Guadarrama River. Its ruins are located at the confluence of the municipalities of Torrelodones, Galapagar and Las Rozas de Madrid, in the northwest of the Spanish autonomous community of Madrid.

It was designed by the Spanish military engineer, of French origin Carlos Lemaur, promoted and financed by the Bank of San Carlos, under the Royal Treasury of Carlos III, in the context of the works of the Guadarrama canal, which was not completed either. , of what would have been its regulating reservoir. Through this project, it was intended to create a navigable channel of 667 km, which, saving a difference of 700 m, would have linked Madrid and the Submeseta Sur with the Atlantic Ocean, connecting the waters of four main rivers: the Guadarrama (its point of origin), the Manzanares (at the height of the Toledo Bridge in Madrid), the Tagus (as it passes through Aranjuez) and the Guadalquivir (through Seville).
Source: es.wikipedia.org/wiki/Presa_de_El_Gasco

Translated by Google •

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3

3.01 km

No entry

Highlight • Trail

Although the Komoot map shows that you can pass through here, the truth is that a couple of years ago they fenced off this part of the mountain with signs prohibiting entry.

Translated by Google •

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4

3.18 km

El Gasco Dam

Highlight • Monument

The El Gasco dam, also called Peña Strait or Carlos III Dam, is one of the most important civil engineering projects in 18th century Spain. It is located above the Guadarrama River gorge, in an area currently protected by the regional park of the middle course of the Guadarrama River and its surroundings.

Translated by Google •

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5

5.60 km

View of Presa del Gasco

Highlight • Viewpoint

Beautiful route with a nice view of the helmet dam. Little unevenness

Translated by Google •

Tip by

B

7.08 km

End point

Bus stop

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Way Types & Surfaces

Way Types

4.40 km

963 m

835 m

567 m

303 m

Surfaces

4.18 km

1.01 km

919 m

567 m

303 m

< 100 m

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Elevation

Elevation

Nothing selected – click and drag below to see the stats for a specific part of the route.

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Weather

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Tuesday 28 July

38°C

21°C

-- %

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Comments

May 24, 2022,Presa del Gasco Circuit à partir de La Chopera
It was not possible to do the whole tour of the hike because half of it was not possible to do because it was on a private property (after crossing the bridge on the second mountain of the trip)
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